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Actual Size: 23.88x29.88x0.75"
RESIDENTIAL AND/OR COMMERCIAL USE
Change Every 3 Months





Actual Size: 23.88x29.88x0.75"
RESIDENTIAL AND/OR COMMERCIAL USE
Change Every 3 Months





Actual Size: 23.88x29.88x0.75"
RESIDENTIAL AND/OR COMMERCIAL USE
Change Every 3 Months
At Filterbuy, we don't cut corners—we craft high-quality air filters right here in the USA and ship them to your doorstep for free. No delays, no gimmicks—just clean air, made easy. With thousands of five-star reviews and filters built for real life & every HVAC system, it's no wonder why over 4 million families trust Filterbuy.

Proudly Made In The USA

Fast, Free Shipping on Every Order

Premium Materials That Go The Distance

85,000+ 5-Star Reviews From Happy Customers

Save Up to 70% Per Filter with Packs




Measure length × width × depth with a tape measure to find the actual size.

Round up each dimension to the nearest whole number to get the nominal size. Example: 23.88x29.88x0.75" in → 24x30x1 nominal.

Search by nominal size on our site for the best fit.

If the filter you buy doesn't fit, we'll send you a better size.
MERV stands for Minimum Efficiency Reporting Value—but don't let the technical name fool you. It's just a way to rate how well an air filter traps stuff like dust, pollen, pet dander, and smoke. The higher the MERV number, the more particles it catches—and the cleaner your air will be.

Comparable to:FPR: 4-7
MPR: 600-1000
Dust & Debris
Dust Mites & Particles
Pollen
Mold
Lint
Dander
Comparable to:FPR: 6-9
MPR: 1200-1550
Dust & Debris
Dust Mites & Particles
Pollen
Mold
Lint
Dander
Smoke & Smog
Comparable to:FPR: 10
MPR: 1900-2800
Dust & Debris
Dust Mites & Particles
Pollen
Mold
Lint
Dander
Smoke & Smog
Bacteria
Comparable to:FPR: 10
MPR: 1900-2800
Dust & Debris
Dust Mites & Particles
Pollen
Mold
Lint
Dander
Smoke & Smog
Odors
































We build every Filterbuy filter to deliver reliable 90-day performance—thanks to smart design and premium materials that do the heavy lifting. Here's what makes the difference:
More pleats = more surface area to capture dust and debris, keeping your air cleaner longer.
Pleats are magnetized to attract and trap microscopic particles—like pet dander, pollen, and smoke.
Engineered to resist warping in extreme temperatures and high humidity.

A layer of metal reinforcement keeps pleats evenly spaced and structurally sound—no sagging, even at high airflow.
Assembled with care. Built to perform. Ships fast, free, and reliably from our U.S. facilities.

Turn Off Your HVAC SystemSafety first.

Remove The Old FilterLook for the airflow arrow and make note of the direction.

Slide In Your New FilterArrow should point toward the system (same direction as before).

Turn Your System Back OnAnd enjoy the fresh, clean air.
Not all air filters are created equal. Pleated filters don't just last longer—they actually clean your air better. Here's how they stack up:

Efficiency:
High (MERV 8–13) – Traps more particles
Lifespan:
90 days – Long-lasting performance
Air Quality:
Excellent – Cleaner, healthier air
Materials:
Recyclable and durable

Efficiency:
Low (MERV 4 or less) – Misses small stuff
Lifespan:
30 days or less – Replace often
Air Quality:
Minimal – Basic protection only
Materials:
Thin, flimsy, and not recyclable
Pleated filters are a no-brainer—more protection, less hassle, and better air for your home.
Changing your filter on time keeps your HVAC system running efficiently—and helps protect your lungs from dust, allergens, and airborne irritants. Here's how often to swap it out based on your needs:

For most homes without pets or special air quality concerns. Great for general upkeep and energy efficiency.

Shedding fur, dander, and allergy triggers can build up fast. Changing your filter every two months helps keep the air fresher and symptoms at bay.

For households affected by smoke, pollution, or respiratory conditions, monthly changes ensure maximum protection.
| Nominal Size | 24 x 30 x 1 inches |
| Actual Size | 23.88 x 29.88 x 0.75" inches |
| Filter Type | Pleated |
| Media | Electrostatically Charged |
| Frame | Beverage Board |
| MERV Ratings Available | 8, 11, 13, Carbon |
| Lifespan | Up to 90 Days |
| Origin | Made in USA |
Tired of flimsy filters that barely last and fail to trap the dust and allergens in your home? At Filterbuy.com, we understand what homeowners really need—because we’ve been manufacturing premium air filters in the USA for over a decade, using advanced materials that outperform big-box store brands. Our 24x30x1 MERV 11 air filters are engineered to strike the ideal balance: strong enough to trap microscopic particles like pet dander and mold spores, yet optimized for airflow to protect your HVAC system’s efficiency. We’ve tested them in real homes—ours included—so you get proven performance you can count on with every filter change.
Captures 95% of particles like dust, pollen, and pet dander.
Made in the USA with high-quality, durable materials.
Improves HVAC efficiency and cuts energy use by up to 15%.
Proven performance based on real-world testing and customer feedback.
Fast shipping + auto-delivery make replacements easy.
The 24x30x1 MERV 11 HVAC & furnace air filters manufactured by Filterbuy show great popularity among house owners who want to have cleaner air inside their houses without reducing the performance of the system. These filters are made to fit normal residential systems, and they have the capability of trapping up to 95 percent of air particles such as dust, pollen, pet dander, mold spores, and smoke, and hence they are very suitable to allergy sufferers and pet keeping households.
Each filter is designed to last 3 months during normal use due to its craftsmanship and the high quality of electrostatically charged synthetic media within it, manufactured in the USA. The MERV 11 rating offers a powerful upgrade from basic filters, striking the right balance between superior filtration and airflow efficiency.
Buying one-at-a-time, or larger purchases, Filterbuy will provide you fast shipping and then ensure your purchase is a rewarding one with a satisfaction guarantee, so you can heave a sigh of relief, knowing your air is cleaner and your system is safeguarded.

"After years of testing filters in real homes—including our own—we've designed the 24x30x1 MERV 11 filter to meet what families actually need: powerful filtration that captures the toughest particles without straining your HVAC system. It's the same high-performance standard we use in our facility, because we believe everyone deserves to breathe cleaner, healthier air."
At Filterbuy, we design filters based on real customer needs and proven data. Here’s why our 24x30x1 MERV 11 filters make a difference:
Indoor air can be 2 to 5 times more polluted than outdoor air.
In extreme cases, it’s over 100 times worse.
Source: epa.gov
MERV 11 filters help reduce allergens and asthma triggers.
Especially effective in homes with pets or dust sensitivity.
Source: ncbi.nlm.nih.gov
A clean filter can cut HVAC energy use by 5% to 15%.
Helps avoid system strain and costly repairs.
Source: Energy.gov
We’ve seen these results firsthand in our homes and from thousands of customers. Our filters don’t just meet standards—they’re built to outperform them.
Clean air isn’t a luxury—it’s a necessity. Based on our first hand experience, here’s why Filterbuy’s 24x30x1 MERV 11 filter stands out:
Healthier Air
Captures allergens, dust, and pet dander.
Helps reduce respiratory symptoms in real homes.
Better System Performance
Keeps HVAC units running efficiently.
Reduces energy use and wear on equipment.
Proven Reliability
Made in the USA with quality materials.
Trusted by families, technicians, and our own team.
Our opinion: Don’t settle for generic filters. A well-built MERV 11 filter is a small change that makes a big impact on comfort, health, and long-term savings. Breathe easier—you’ll notice the difference.
Follow these simple steps to improve your air quality today:
Check Your Size
Confirm your filter size is 24x30x1.
Look at your current filter or HVAC manual.
Pick the Right Filter
Choose MERV 11 for strong filtration and airflow.
Order from Filterbuy
Go to Filterbuy.com.
Select single or multi-pack options.
Replace Every 90 Days
Set a reminder to change your filter every 3 months.
Replace sooner if you have pets or allergies.
Subscribe for Auto-Delivery
Never miss a filter change again.
MERV 11 stands for Minimum Efficiency Reporting Value. It indicates that the filter can capture up to 95% of particles between 1.0–3.0 microns, such as dust, mold spores, pet dander, and pollen—making it a great choice for homes with allergies, pets, or high dust levels.
It’s recommended to replace your filter every 90 days. If you have pets, allergies, or live in a dusty environment, consider replacing it every 60 days for optimal performance.
No, not when used properly. Filterbuy’s MERV 11 filters are designed to maintain strong filtration while allowing efficient airflow—so your system runs smoothly without overworking.
Yes, 24x30x1 is a standard size for many residential HVAC and furnace systems. Always double-check your system’s requirements or your existing filter’s dimensions before purchasing.
Absolutely. All Filterbuy filters are proudly manufactured in the USA, using high-quality materials to ensure consistent, reliable performance for your home.